Mari J Matsuda 
Words That Wound [PDF ebook] 
Critical Race Theory, Assaultive Speech, And The First Amendment

In this book, the authors, all legal scholars from the tradition of critical race theory start from the experience of injury from racist hate speech and develop a theory of the first amendment that recognizes such injuries. In their critique of "first amendment orthodoxy", the authors argue that only a history of racism can explain why defamation, invasion of privacy and fraud are exempt from free-speech guarantees but racist verbal assault is not.